merge mapper code from FCEUX

[fceu.git] / mappers / 229.c

/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 2002 Xodnizel
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "mapinc.h"



DECLFW(Mapper229_write)
{
if(A>=0x8000)
{
MIRROR_SET((A>>5)&1);
if(!(A&0x1e))
 {
 ROM_BANK32(0);
 }
else
 {
 ROM_BANK16(0x8000,A&0x1f);
 ROM_BANK16(0xC000,A&0x1f);
 }
 VROM_BANK8(A);
}

}

void Mapper229_init(void)
{
  SetWriteHandler(0x8000,0xffff,Mapper229_write);
}